<template>
  <div class="loginStyle">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="loginForm">
      <h2 class="loginTitle">人事后台管理系统</h2>
      <el-form-item prop="username">
        <el-input
          v-model="loginForm.username"
          type="text"
          auto-complete="off"
          placeholder="账号"
        >
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          v-model="loginForm.password"
          type="password"
          auto-complete="off"
          placeholder="密码"
          @keyup.enter.native="handleLogin"
        >
        </el-input>
      </el-form-item>
      <el-form-item prop="code">
        <el-input
          v-model="loginForm.code"
          auto-complete="off"
          placeholder="验证码"
          style="width: 60%"
          @keyup.enter.native="handleLogin"
        >
         </el-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCode" class="login-code-img"/>
        </div>
      </el-form-item>
      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 20px 0px;">记住密码</el-checkbox>
      <el-form-item style="width:100%;">
        <el-button
          :loading="loading" type="primary"
          style="width:100%;" @click.native.prevent="handleLogin">
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";

export default {
  name: "Login",
  data() {
    return {
      codeUrl: "",
      loginForm: {
        username: "admin",
        password: "admin123",
        rememberMe: false,
        code: "",
        uuid: ""
      },
      loginRules: {
        username: [
          { required: true, trigger: "blur", message: "请输入用户名" }
        ],
        password: [
          { required: true, trigger: "blur", message: "请输入密码" }
        ],
        code: [{ required: true, trigger: "change", message: "请输入验证码" }]
      },
      loading: false
    };
  },

  created() {
    this.getCode();
    this.getCookie();
  },
  methods: {
    getCode() {
      getCodeImg().then(res => {
        this.codeUrl = "data:image/gif;base64," + res.img;
        this.loginForm.uuid = res.uuid;

      });
    },
    getCookie() {
      const username = Cookies.get("username");
      const password = Cookies.get("password");
      const rememberMe = Cookies.get('rememberMe')
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password: password === undefined ? this.loginForm.password : password,
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
      };
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true;
          if (this.loginForm.rememberMe) {
            Cookies.set("username", this.loginForm.username, { expires: 10 });
            Cookies.set("password", this.loginForm.password, { expires: 10 });
            Cookies.set('rememberMe', this.loginForm.rememberMe, { expires: 10 });
          } else {
            Cookies.remove("username");
            Cookies.remove("password");
            Cookies.remove('rememberMe');
          }
          this.$store.dispatch("Login", this.loginForm).then(() => {
            this.$router.push({ path: this.redirect || "/" }).catch(()=>{});
          }).catch(() => {
            this.loading = false;
            this.getCode();
          });
        }
      });
    }
  }
};
</script>

<style>
.loginStyle {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
}
.loginTitle {
  text-align: center;
  color: #818181;
}

.loginForm {
  border-radius: 6px;
  width: 450px;

  .el-input {
    height: 40px;
    input {
      height: 40px;
    }
  }
}
.login-code {
  width: 35%;
  height: 40px;
  float: right;
  img {
    vertical-align: middle;
  }
}
.login-code-img {
  height: 40px;
}
</style>
